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2007 hummer h3,wiper stops all over,works at high speed only

Checked the relay and fuses- ok

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Posted on Jan 02, 2017

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SOURCE: windshield wipers on 2007 sportage dont work

since it is a 2007 car i would think that you would be able to take to dealership free of charge

Posted on Aug 17, 2009

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SOURCE: I have a 2007 H3 hummer, suddenly my fan does

It's the HVAC blower resistor in the air plenum under the glovebox. New resistor and wiring harness is about $70 at the Hummer Dealer.

Posted on Oct 07, 2009

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SOURCE: DOORS displays on DIC in 2007 Hummer H3. All

i beleive those have their own door switches in latch i would try to clean latches with spray brake kleen then blow out, lube with a spray lube like wd40 that may solve your issue. while your doing this remove negative battery cable so the ecm has to recheck doors system.

Posted on Mar 18, 2010

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SOURCE: 2006 H3 Hummer 3.5L Fan blower just stopped

had thid problem and took it to a dealer. they showed me a resistor plug that is between the switch and the blower that melted. I can feel cold air but blower did not work . they said you cannot order the part but they have all the peices to rebuild it. hope the works for you!

Posted on Jul 01, 2010

SOURCE: winshield wiper works on high

This solution applies specifically to a 91 Ranger with delay wipers, but may apply to other years as well:

There is a "cold solder" joint on the wiper control module that should be investigated whenever intermittent wiper issues crop up. I dont have the ability to post a schematic, but it is one of the leads that come off of the main terminal, and is fairly large. The solder around the lead will look dull and will most likely show physical separation from the circuit board itself. Re-solder with a good hot iron and it may well cure what ails ya. Takes 30-45 minutes, depending on how adept you are at worming your way under the dash to retrieve the module. It's to the left of the ashtray about 6 inches.

Posted on Jun 08, 2012

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1 Answer

How do I find out if the wipers on my 2006 H3 Hummeris on a relay?


The Wiper/Washer System consists of the following components:
• Windshield wiper/washer switch
• Body control module (BCM)
• Wiper micro relay
• Wiper 2 relay
• Wiper diode
• Windshield wiper motor
• Windshield washer pump
• Windshield washer nozzles
• Windshield washer solvent container
• Windshield wiper arm and blade assemblies
• Windshield wiper transmission
• WIP/WASH 10A fuse
• WIPER 25A fuse

Wiper/Washer System Description
The body control module (BCM) controls wiper motor low speed operation. The washer pump and high speed operation are controlled directly by the wiper/washer switch. The windshield wiper/washer switch supplies voltage on the signal circuits to the BCM for windshield wiper/washer operation. When WASH, MIST, DELAY, LOW, or HIGH is detected, the BCM energizes the wiper micro relay by suppling voltage to the relay coil. This allows battery voltage from the WIPER fuse to flow through the relay switched input then through the contacts and out the relay switched output to the wiper 2 relay switch contacts. Since the wiper 2 relay switch contacts are normally closed to the low speed circuit of the windshield wiper motor, the motor will operate at low speed.

Low Speed Operation
When the wiper switch is in the Low position, voltage is supplied through an internal resistor to the signal circuit. The body control module (BCM) monitors the windshield wiper switch signal 1 circuit, and energizes the wiper micro relay which will operate the windshield wiper motor. The wiper motor will operate at low speed, since the wiper 2 relay is de-energized. Low speed can also be commanded with a scan tool, by commanding Wiper Relay Cmd. ON and OFF. Refer to Scan Tool Output Controls .
High Speed Operation
In the High position, the windshield wiper/washer switch supplies voltage to both the wiper micro relay and wiper 2 relay coils. This energizes both relays and allows battery voltage from the wiper micro relay switched output to the switched input of the wiper 2 relay through its contacts and out the switched output of the wiper 2 relay to the high speed circuit of the windshield wiper motor. The windshield wiper motor will operate at high speed. During high speed wiper motor operation the wiper switch signal circuit is at the low speed signal voltage, and the body control module (BCM) supplies redundant voltage to the wiper relay via the wiper diode.

This info is out of hummer factory service manual !

Dec 10, 2016 | 2006 Hummer H3

1 Answer

Why did my wipers on my 2006 H3 Hummer quit?


This is a complex wiper circuit ! The place to start would be to check for DTC'S - diagnostic trouble code's .
DTC B3715, B3716, B3717, B3718, or B3719
The body control module (BCM) controls and monitors the state of the ON/OFF wiper relay control circuit. When the windshield wiper switch is placed in to a low speed setting, a signal is applied to the BCM. The BCM then applies battery positive voltage to the coil side of the ON/OFF WPR relay through the relay control circuit. This energizes the relay, allowing battery positive voltage from the FRT/WPR fuse through the switched side of the ON/OFF WPR relay through the HI/LOW WPR relay and to the windshield wiper motor. Ground is applied at all times to the coil sides of the wiper relays and the windshield wiper motor from G105.
• DTC B3717, the BCM detects a low voltage level on the supply circuit of the wiper micro relay for 1 second when the relay is energized.
• DTC B3718, the BCM detects a high voltage level on the supply circuit of the wiper micro relay for 1 second when the relay is de-energized
Your best bet mite be to take your vehicle to a qualified repair shop !

Dec 10, 2016 | 2006 Hummer H3

1 Answer

My power seat stop working I can't find a fuse box in a 2007 h3 Hummer


Fuse box is under the hood. Black box about 11" x 8" Should say FUSES on top. top comes off and fuses and relays are inside. #61 is power seat fuse . Map of Fuse and relay numbers is on inside of top cover.

Apr 12, 2015 | 2007 Hummer H3

1 Answer

The wiper stops every where when u shut it off,does not go down


Your small circuit on wiper motor is bad i had the same problem check it take a look its called wiper censor change it and it will stop raining its like majic. Kcp

Dec 31, 2014 | 2007 Hummer H3

1 Answer

2007 hummer h3,heater blower moter does not work at any speed,hi,low and medium,


Check underneath behind the glove box,there is a connector with a red input that might be burnt out.it happens with the h3

Jan 05, 2013 | Hummer H3 Cars & Trucks

1 Answer

The airconditioner only works in my 2006 H3 when the car is physically moving over 25 mph. If it is going slow or idling there is no air coming from the blower/fan. When it does blow it is only on a low...


There is a HVAC relay and FUSE in the under hood fuse box, have you check both of these? If the blower works on any speed, the blower is good. You say it blows on lowest speed? The blower speed resistor is mounted on the blower housing. The HIGH SPEED BLOWER RELAY is mounted on the blower motor. You may have multiple problems but check fuses first, if all is OK, then a qualified repair shop will need to check further. You do NOT need the whole A/C system replaced. If it does blow cold, thats good, you just need the blower working.

Nov 03, 2009 | 2006 Hummer H3

1 Answer

Wipers don't work on my hummer h3 2006


Check your fuses. Or the wipers might be on a relay.

Oct 25, 2009 | 2006 Hummer H3

1 Answer

I have a 2007 H3 hummer, suddenly my fan does


It's the HVAC blower resistor in the air plenum under the glovebox. New resistor and wiring harness is about $70 at the Hummer Dealer.

Sep 10, 2009 | 2006 Hummer H3

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